INFO: task syz.1.3419:21369 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.3419      state:D stack:25176 pid:21369 tgid:21368 ppid:19296  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x6d8/0xbc0
 migrate_pages_batch+0x160a/0x36d0
 migrate_pages+0x20e0/0x29c0
 compact_zone+0x2140/0x4640
 sysctl_compaction_handler+0x4e3/0x870
 proc_sys_call_handler+0x4cb/0x700
 iter_file_splice_write+0x99b/0x1100
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x53a/0xc70
 do_splice_direct+0x195/0x290
 do_sendfile+0x535/0x7c0
 __se_sys_sendfile64+0xdf/0x1a0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa31bb9acb9
RSP: 002b:00007fa31c975028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa31be15fa0 RCX: 00007fa31bb9acb9
RDX: 00002000000000c0 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007fa31bc08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa31be16038 R14: 00007fa31be15fa0 R15: 00007ffcfe127568
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5661:
 #0: ffff88816ca1f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
1 lock held by udevd/19568:
 #0: ffff888106f93358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.1.3419/21369:
 #0: ffff888184a4a420 (sb_writers#3){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
5 locks held by syz.6.4363/25069:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 25069 Comm: syz.6.4363 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__lock_acquire+0x197b/0x2cf0
Code: 14 25 ff 0f 00 00 39 05 0f 2a 38 12 73 06 89 05 07 2a 38 12 48 8b 02 48 89 df 4c 39 e8 0f 84 2c fe ff ff 4c 89 60 30 48 8b 00 <4c> 39 e8 75 f4 48 89 df e9 18 fe ff ff 48 89 fb 48 c7 c7 f0 84 22
RSP: 0018:ffffc9000a8d6a30 EFLAGS: 00000006
RAX: ffffffff9661f908 RBX: 00000000000003dd RCX: 0000000000000020
RDX: ffffffff965b5788 RSI: ffff88810e5d6430 RDI: 00000000000003dd
RBP: f2f8360c2c4e2fb0 R08: ffffc9000a8d69f8 R09: 0000000000000020
R10: dffffc0000000000 R11: ffffffff819f9f10 R12: ffffffff965b5a98
R13: ffffffff9378fe28 R14: ffff88810e5d57c0 R15: 000000000000001f
FS:  00007effba3bd6c0(0000) GS:ffff8882a9924000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005557fd380000 CR3: 0000000114234000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x106/0x330
 _raw_spin_lock_irqsave+0x40/0x60
 debug_object_deactivate+0x6c/0x3a0
 debug_deactivate+0x1d/0x1e0
 hrtimer_try_to_cancel+0x2ff/0x420
 update_curr_dl_se+0x30f/0xca0
 update_curr+0x226/0x4f0
 put_prev_entity+0x41/0x230
 pick_next_task_fair+0x1d92/0x2120
 __pick_next_task+0xeb/0x480
 __schedule+0x7c2/0x4fb0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x597/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_pc+0x45/0x70
Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 6c 16 00 00 00 74 2c 8b 91 48 16 00 00 83 fa 02 75 21 48 8b 91 50 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 4c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2
RSP: 0018:ffffc9000a8d7360 EFLAGS: 00000246
RAX: ffffffff81fb9a20 RBX: 0000000000000010 RCX: ffff88810e5d57c0
RDX: ffffc900287dc000 RSI: 000000000007ffff RDI: 0000000000000040
RBP: dffffc0000000000 R08: ffffea00044bd637 R09: 1ffffd4000897ac6
R10: dffffc0000000000 R11: fffff94000897ac7 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc9000a8d73c0 R15: ffff88810c9b5b80
 xas_reload+0x90/0x470
 filemap_get_entry+0x1e1/0x320
 __filemap_get_folio_mpol+0x6d/0xb00
 f2fs_grab_cache_folio+0x2e/0x380
 __get_node_folio+0x1a0/0x1540
 f2fs_get_dnode_of_data+0x839/0x2060
 f2fs_reserve_block+0x53/0x310
 f2fs_get_new_data_folio+0x145/0x880
 __exchange_data_block+0x132e/0x3270
 f2fs_insert_range+0x3aa/0x490
 f2fs_fallocate+0x58a/0x970
 vfs_fallocate+0x669/0x7e0
 __x64_sys_fallocate+0xc0/0x110
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effb959acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007effba3bd028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007effb9815fa0 RCX: 00007effb959acb9
RDX: 0000000000004000 RSI: 0000000000000020 RDI: 0000000000000009
RBP: 00007effb9608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000003000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007effb9816038 R14: 00007effb9815fa0 R15: 00007fffcb4fbec8
 </TASK>
